Mathematical Double-struck Capital A Symbol
𝔸 is the Mathematical Double-Struck Capital A (U+1D538), used to represent specific sets and objects in math.
U+1D538
The character 𝔸 (U+1D538) is a Unicode math letter used in technical writing. It’s often preferred when you want a “double-struck” style capital A. Use it in plain text or insert it into design and documentation workflows.
Mathematical Double-struck Capital A Symbol Meaning
𝔸 is the Unicode character called “MATHEMATICAL DOUBLE-STRUCK CAPITAL A” (U+1D538). Double-struck capitals are commonly used in mathematics to distinguish certain standard sets or structures—especially in contexts where authors reserve special letter styles for categories like number systems, algebraic structures, or named families of sets. In practice, its meaning depends on the author’s notation: it may denote a particular set (such as a reference collection in a proof) or a symbol representing a mathematical object. When copying between tools, keep an eye on font support and Unicode handling to ensure the glyph renders correctly.
Common uses
- •Representing a named set or object in math notes written in plain text
- •Labeling a particular structure in lecture slides or documentation
- •Using a consistent double-struck style in technical writing outside LaTeX
- •Creating math-themed graphics, posters, or UI typography elements
- •Referencing a math symbol in tutorials, cheat sheets, or comments
Examples
𝔸 — Mathematical Double-Struck Capital A
- 𝔸Let 𝔸 be the set of all valid inputs.
- 𝔸We define 𝔸 as a family of subsets.
- 𝔸Assume 𝔸 is closed under the operation.
- 𝔸Consider the object 𝔸 in the proof.
- 𝔸The map is defined on 𝔸.
Variations
Ready to copy
Technical codes
| Unicode | U+1D538 | |
| HTML Entity | 𝔸 | |
| HTML Code | 𝔸 | |
| CSS | \1D538 | |
| Decimal | 120120 |
How to type Mathematical Double-struck Capital A Symbol (𝔸)
On Windows
In Word, type 1D538 then press Alt + X. Or open the emoji picker with Windows key + period.
On Mac
Press Control + Command + Space to open Character Viewer and search for the character.
On Linux
Press Control + Shift + U, type 1d538, then press Enter or Space.
Anywhere
Copy 𝔸 with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Mathematical Double-struck Capital A symbol mean?
𝔸 is the Unicode character called “MATHEMATICAL DOUBLE-STRUCK CAPITAL A” (U+1D538). Double-struck capitals are commonly used in mathematics to distinguish certain standard sets or structures—especially in contexts where authors reserve special letter styles for categories like number systems, algebraic structures, or named families of sets. In practice, its meaning depends on the author’s notation: it may denote a particular set (such as a reference collection in a proof) or a symbol representing a mathematical object. When copying between tools, keep an eye on font support and Unicode handling to ensure the glyph renders correctly.
What is the Unicode code point for 𝔸?
𝔸 has Unicode code point U+1D538.
How can I copy 𝔸 into my document or website?
You can copy the character directly (𝔸). For HTML, you can also use the entity 𝔸.
Will 𝔸 display correctly in all fonts?
Not always. Double-struck math characters may require a font with full Unicode math support; otherwise the glyph may appear as a fallback box or different style.
Is 𝔸 the same as the normal letter A?
No. 𝔸 is a double-struck mathematical capital A (Unicode U+1D538), which is visually and semantically different from plain “A”.